MJ
Mary Johnston — 1940 US Census Record
Model Tree available1940 United States Federal Census · Franklin-County, Ohio
Our Model Tree links this Mary Johnston across the 1920, 1930 and 1940 US Censuses in Franklin-County, Ohio (XGBoost, ~Confirmed), with identified parents Elizabeth & Thomas — first a spouse (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Female
Spouse
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Franklin-County, Ohio |
| Surname | Johnston |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Columbus |
| 1935 Residence (County) | Franklin |
| Additional Details | |
| Occupation | Home |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Home |
| Township / Ward | Columbus |
| Est. Birth Year | ~1915 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Infant Johnston | Daughter | — | ~1940 | |
| Marilyn Johnston | Daughter | — | 2 | ~1938 |
| Charles Johnston | Head | — | 26 | ~1914 |
| Mary Johnston | Spouse | — | 25 | ~1915 |
Census Appearances
1920
Franklin, Ohio
Daughter, age 4
Franklin, Ohio · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Franklin, Ohio
Daughter, age 14
Franklin, Ohio · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Franklin-County, Ohio
Spouse, age 25
Franklin-County, Ohio · implied b. ~1915 — 4 household members
| Surname | Johnston |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Columbus |
| 1935 Residence (County) | Franklin |
| Occupation | Home |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Mary Johnston across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Elizabeth Johnston (~0.92 confidence) and father Thomas Johnston (~0.92 confidence) and mother Laura Johnston (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Elizabeth Johnston
b. ~1881
Source mother
● Household
· direct · ~0.92
Father
Thomas Johnston
b. ~1894
Source father
● Household
· direct · ~0.92
Mother
Laura Johnston
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Johnston
Spouse · 1940 · age 25 · b. ~1915 · Ohio
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Franklin-County, Ohio
Open full size
1940 US Federal Census — Franklin-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03245-00408)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Kathy O'Neill | 17 | daughter | — | Ohio |
| 42 | Martin C O'Neill | 16 | son | — | Ohio |
| 43 | Patrick O'Neill | 14 | son | — | Ohio |
| 44 | Donald O'Neill | 12 | son | — | Ohio |
| 45 | William O'Neill | 10 | son | — | Ohio |
| 46 | Jeanne O'Neill | 8 | daughter | — | Ohio |
| 47 | Carolyn O'Neill | 7 | daughter | — | Ohio |
| 48 | Nancy O'Neill | 5 | daughter | — | Ohio |
| 49 | Michael O'Neill | 3 | son | — | Ohio |
| 50 | Barbara O'Neill | 2 | daughter | — | Ohio |
| 51 | Robert O'Neill | 0 | son | — | Ohio |
| 52 | John D Mantle | 67 | Head | Clerk | Indiana |
| 53 | Alice Mantle | 65 | Wife | Home | Ohio |
| 54 | Homer Seymour | 56 | Boarder | Cook | Ohio |
| 55 | Howard E Frames | 31 | Head | Gardener | Ohio |
| 56 | Essie Frames | 28 | Wife | Home | Ohio |
| 57 | Roscoe Vandeventer | 53 | Head | Director | Indiana |
| 58 | Jennie K Vandeventer | 47 | Wife | Home | Indiana |
| 59 | Charles D Johnston | 26 | Head | Salesman | Indiana |
| 60 | Mary E Johnston THIS PERSON | 25 | Wife | Home | Ohio |
| 61 | Marilyn Johnston | 2 | daughter | — | Ohio |
| 62 | Infant Johnston | 0 | daughter | — | Ohio |
| 63 | William Sutherland | 67 | Head | Stone Cutter | Scotland |
| 64 | Mary Sutherland | 59 | Wife | Home | Ireland |
| 65 | Alfred Anderson | 54 | Head | Truck Driver | Ohio |
| 66 | Florence Anderson | 53 | Wife | Home | Ohio |
| 67 | See Line 73, This Page | None | — | — | — |
| 68 | Mack E Holbrook | 63 | Head | Tool Boy | Kentucky |
| 69 | Anna Holbrook | 44 | Wife | Home | Ohio |
| 70 | Eileen Holbrook | 19 | daughter | Nurse Maid | Ohio |
| 71 | Benny Holbrook | 15 | son | — | Ohio |
| 72 | Paul Holbrook | 9 | son | — | Ohio |
| 73 | Rayday D Hughes | 31 | Head | Cook | North Carolina |
| 74 | Kathryn Hughes | 24 | Wife | Home | Ohio |
| 75 | Betty Lou Hughes | 7 | daughter | — | Ohio |
| 76 | See 13-B Line 45-46 | None | — | — | — |
| 77 | See 13-B Line 47-49 | None | — | — | — |
| 78 | See 6-B Line 57 | None | — | — | — |
| 79 | See 13-B Line 50-54 | None | — | — | — |
| 80 | Mcpeek Wholesale Egg Store | None | — | — | — |
Pedigree Summary
Mary
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)